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On the Estimation of the Diffusion Coefficient and Distribution of Hydrogen in Stainless Steel

16 Pages Posted: 26 Jan 2020 First Look: Under Review

See all articles by Malo Duportal

Malo Duportal

La Rochelle University

Abdelali Oudriss

La Rochelle University

Xavier Feaugas

La Rochelle University

Catherine Savall

La Rochelle University

Abstract

In this work, the localisation of hydrogen in an electrochemically charged stainless steel was investigated by Scanning Kelvin Probe Force Microscopy and Glow Discharge Optical Emission Spectroscopy analysis. Both techniques indicated a high hydrogen content at less than 90 micrometres under the charged surface. Thermal Desorption Spectroscopy was used to calibrate the data from both techniques and thus to calculate the hydrogen concentration. Finally, after assuming certain hypotheses, Fick's laws were used to calculate the coefficient of diffusion and subsurface concentration of hydrogen in cathodic charging conditions.

Keywords: Austenitic steels, Stainless steel, Hydrogen Absorption, Hydrogen Diffusion, Kelvin Probe Force Microscopy

Suggested Citation

Duportal, Malo and Oudriss, Abdelali and Feaugas, Xavier and Savall, Catherine, On the Estimation of the Diffusion Coefficient and Distribution of Hydrogen in Stainless Steel. Available at SSRN: https://ssrn.com/abstract=3522215 or http://dx.doi.org/10.2139/ssrn.3522215

Malo Duportal (Contact Author)

La Rochelle University ( email )

La Rochelle, 17042
France

Abdelali Oudriss

La Rochelle University ( email )

La Rochelle, 17042
France

Xavier Feaugas

La Rochelle University

La Rochelle, 17042
France

Catherine Savall

La Rochelle University

La Rochelle, 17042
France

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